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<?php
/*
* @package bfNetwork
* @copyright Copyright (C) 2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023,2024,2025,2026 Blue Flame Digital Solutions Ltd. All rights reserved.
* @license GNU General Public License version 3 or later
*
* @see https://mySites.guru/
* @see https://www.phil-taylor.com/
*
* @author Phil Taylor / Blue Flame Digital Solutions Limited.
*
* bfNetwork is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* bfNetwork is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this package. If not, see http://www.gnu.org/licenses/
*
* If you have any questions regarding this code, please contact phil@phil-taylor.com
*/
/**
* Some of this taken from Akeeba Backup.
*
* @copyright Copyright (c)2009 Nicholas K. Dionysopoulos
* @license GNU GPL version 3 or, at your option, any later version
*/
class bfTimer
{
/**
* @var int Maximum execution time allowance per step
*/
private $max_exec_time = null;
/**
* @var int Timestamp of execution start
*/
public $start_time = null;
/**
* Public constructor, creates the timer object and calculates the execution time limits.
*/
public function __construct()
{
// Initialize start time
$this->start_time = $this->microtime_float();
// Get PHP's maximum execution time (our upper limit)
if (@function_exists('ini_get')) {
$php_max_exec_time = @ini_get('max_execution_time');
if ((! is_numeric($php_max_exec_time)) || (0 == $php_max_exec_time)) {
// If we have no time limit, set a hard limit of about 10
// seconds
// (safe for Apache and IIS timeouts, verbose enough for users)
$php_max_exec_time = _BF_CONFIG_PHP_MAX_EXEC_TIME;
}
} else {
// If ini_get is not available, use a rough default
$php_max_exec_time = _BF_CONFIG_PHP_MAX_EXEC_TIME;
}
// Apply an arbitrary correction to counter Decryption load time
--$php_max_exec_time;
--$php_max_exec_time;
// Apply bias
$this->max_exec_time = $php_max_exec_time;
// Use the most appropriate time limit value
// Overrule EVERYthing above :-) set hard limit
if (_BF_CONFIG_PHP_MAX_EXEC_TIME_HARD_LIMIT !== null) {
$this->max_exec_time = _BF_CONFIG_PHP_MAX_EXEC_TIME_HARD_LIMIT;
}
// crappy webhost
if (ini_get('max_execution_time') < $this->max_exec_time) {
$this->max_exec_time = ini_get('max_execution_time');
--$this->max_exec_time;
}
}
/**
* @return bfTimer
*/
public static function getInstance()
{
static $instance;
if (! isset($instance)) {
$instance = new self();
}
return $instance;
}
/**
* Wake-up function to reset internal timer when we get unserialized.
*/
public function __wakeup()
{
// Re-initialize start time on wake-up
$this->start_time = $this->microtime_float();
}
/**
* Gets the number of seconds left, before we hit the "must break" threshold.
*
* @return float
*/
public function getTimeLeft()
{
return $this->max_exec_time - $this->getRunningTime();
}
/**
* Gets the time elapsed since object creation/unserialization, effectively how long Akeeba Engine has been
* processing data.
*
* @return float
*/
public function getRunningTime()
{
return $this->microtime_float() - $this->start_time;
}
/**
* Returns the current timestamp in decimal seconds.
*/
public function microtime_float()
{
list($usec, $sec) = explode(' ', microtime());
return (float) $usec + (float) $sec;
}
/**
* Reset the timer. It should only be used in CLI mode!
*/
public function resetTime()
{
$this->start_time = $this->microtime_float();
}
/**
* @return int|string|null
*/
public function getMaxTime()
{
return $this->max_exec_time;
}
/**
* @return float|int|null
*/
public function getStartTime()
{
return $this->start_time;
}
}